;;; -*-lisp-*-
;;;
;;; $Id$
;;;
;;; Zone generator frontend
;;;
;;; (c) 2005 Straylight/Edgeware
;;;

;;;----- Licensing notice ---------------------------------------------------
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;; 
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;; 
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software Foundation,
;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

(defpackage #:zone.frontend
  (:use #:common-lisp #:mdw.optparse #:zone)
  (:export #:main))
(in-package #:zone.frontend)

(defconstant version "1.0.0")

(defvar opt-zones nil
  "Which zones to be emitted.")

(defvar options nil)
(defvar usage nil)
(defun help (arg)
  (declare (ignore arg))
  (show-help *program-name* version usage options)
  (exit 0))
(defun version (arg)
  (declare (ignore arg))
  (format t "~A, version ~A~%" *program-name* version)
  (exit 0))
(defun do-usage (&optional (stream *standard-output*))
  (show-usage *program-name* usage stream))
(defun usage (arg)
  (declare (ignore arg))
  (do-usage)
  (exit 0))
(setf options
      (options
       "Help options"
       (#\h "help" #'help
	    "Show this help message.")
       (#\v "version" #'version
	    ("Show the `~A' program's version number." *program-name*))
       (#\u "usage" #'usage
	    ("Show a very brief usage summary for `~A'." *program-name*))

       "Output options"
       (#\z "zone" (:arg "NAME") (list opt-zones)
	    "Write information about zone NAME.")))
(setf usage (simple-usage options "ZONEDEF..."))

(defun main ()
  (with-unix-error-reporting ()
    (let ((seq 54)
	  (files nil)
	  (op (make-option-parser (cdr *command-line-strings*) options)))
      (unless (option-parse-try
		(loop
		   (multiple-value-bind (opt arg) (option-parse-next op)
		     (declare (ignore arg))
		     (unless opt
		       (return))))
		(setf files (option-parse-remainder op))
		(when (zerop (length files))
		  (option-parse-error "no files to read")))
	(do-usage *error-output*)
	(exit 1))
      (dolist (f files)
	(let ((*package* (make-package (format nil "zone.scratch-~A"
					       (incf seq))
				       :use '(#:common-lisp #:zone))))
	  (load f :verbose nil :print nil :if-does-not-exist :error)))
      (zone-save opt-zones))))

;;;----- That's all, folks --------------------------------------------------